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Jo, Wook
Sustainable Functional Ceramics Lab
Research Interests
  • Lead-free piezoceramics, ultra - low temperature sintering, ferroelectrics, relaxor ferroelectrics, 2D materials, magnetoelectric materials, multiferroics


Equilibrium shape of nickel crystal

DC Field Value Language Hong, Ju-Seop ko Jo, Wook ko Ko, Kyung-Jun ko Hwang, Nong Moon ko Kim, Doh-Yeon ko 2014-10-20T08:49:52Z - 2014-10-20 ko 2009 ko
dc.identifier.citation PHILOSOPHICAL MAGAZINE, v.89, no.32, pp.2989 - 2999 ko
dc.identifier.issn 1478-6435 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The equilibrium shape of pure nickel and the effect of carbon on changes in the equilibrium shape at 1200 degrees C were investigated. A statistical observation on the size-dependent, time-dependent and carbon-induced morphological evolution of crystallites suggested that the equilibrium crystal shape (ECS) of pure nickel is a polyhedron consisting of {111}, {100}, {110} and {210} surfaces. However, crystals with an extensive proportion of {320} surfaces were also frequently observed. The appearance of {320} surfaces was interpreted as kinetically stabilized metastable surfaces, which survived during the thermal equilibrating process, possibly due to a high nucleation energy barrier for their removal. On the other hand, the ECS of pure nickel was observed to change dramatically into a spherical shape with facets of {111}, {100}, {110} and {210} without exception under a carburized atmosphere, which indicates that carbon not only facilitates surface diffusion by which energetically more stable surfaces can be easily developed but also decreases the surface energy anisotropy. Together with X-ray photoelectron spectroscopy studies, it was proposed that the carbon-induced changes in the ECS are possibly due to a solid solution effect, which could lead to a reduction in the binding energy among atoms in the bulk as well as on the surfaces. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher TAYLOR & FRANCIS LTD ko
dc.subject Equilibrium crystal shape ko
dc.subject Nickel (Ni) ko
dc.subject Surface energy anisotropy ko
dc.title Equilibrium shape of nickel crystal ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-70449084976 ko
dc.identifier.wosid 000271871900007 ko
dc.type.rims ART ko
dc.description.wostc 5 *
dc.description.scopustc 5 * 2015-05-06 * 2014-10-20 *
dc.identifier.doi 10.1080/14786430903164598 ko
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